# import numpy as np
#
# a = np.array([[1,2,3],
#               [4,5,6],
#               [7,8,9]])
# b = np.sum(a,axis=0)
# print(a)
# print(b)
#
# print(len(b))

import time
import datetime
t = time.time()
print(t)
print(datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S.%f')+',')